Got an error too :
The mod Updated Construction Drones (2.0.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event Updated_Construction_Drones::on_ai_command_completed (ID 128)
Unknown item name: 1
stack traceback:
[C]: in function 'draw_sprite'
...ated_Construction_Drones__/script/construction_drone.lua:1307: in function 'update_drone_sticker'
...ated_Construction_Drones__/script/construction_drone.lua:1599: in function <...ated_Construction_Drones__/script/construction_drone.lua:1528>
(...tail calls...)
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>
after asking the drones to destroy some rocks, right at the start of the game.
Couldn't get a save to reproduce as this happened right at the start..